Presentation given by Lars Kai Hansen of the Technical University of Denmark on January 22, 2009 to the Redwood Center for Theoretical Neuroscience at UC Berkeley.

Abstract:
Among the exponentially many ways of grouping data, can we characterize the ways that make sense to a human?. Cognitive component analysis is defined as the process of unsupervised grouping of data such that the ensuing group structure is well-aligned with that resulting from human cognitive activity.

We present evidence that independent component analyses of abstract data such as text, social interactions, music, and speech provide cognitive components.